In 2007, a real estate agent named John Maloof paid $380 at an auction house for a box of 30,000 prints and negatives from an unknown photographer. Going through the box, he began to realize that the street photographs of 1950s and 60s Chicago and New York were both very unique and of very high quality. Some research lead to the photographer's identity: Vivian Maier, a nanny who spent nearly 40 years taking photographs but never shared her work. This documentary on the discovery of her amazing work looks promising!